Originally posted by Wickerman
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The gaps between the "cobbles" (more likely granite setts) were filled by sand, or gravel, or a dry cement grout. Combined with the surprising amount of stone worn away by traffic meant a lot of dust was created. Apparently in dry weather some roads had to be watered daily to keep it down. Which led to a lot of dirt.
And you're absolutely right about the contents of the "mud". Or 57% right, I should say - an analysis of the mud from the streets was found to be composed of: horse dung 57%; abraded stone 30%; and abraded iron 13%.
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